fpc/compiler/fpkg.pas
svenbarth 7d8d0340b9 Merged revision(s) 31988, 31991-31993, 32136, 32308-32309, 32312, 32318 from branches/svenbarth/packages:
Correctly parse the directives DenyPackageUnit and WeakPackageUnit

ppu.pas:
  + add flags uf_packagedeny and uf_packageweak
scandir.pas:
  + new procedure do_moduleflagswitch() which parses a ON/OFF/+/- argument and sets or clears a flag in the current module
  + new procedure dir_denypackageunit which handles DenyPackageUnit
  * implement dir_weakpackageunit (and move to the correct location ;) )
  * InitScannerDirectives: add dir_denypackageunit handler
........
Respect DenyPackageUnit flag.

pmodules.pas, proc_package:
  * check all contained units that are not already part of a package for their uf_package_deny flag and report an error for each that has it set
........
Do not check whether all units are used as by definition all units of a package are considered as used.

pmodules.pas, proc_package:
  - remove call to current_module.allunitsused
........
Check whether a unit has been implicitely imported in a package. A unit is considered as implicitely imported if it is not part of a required package nor part of the units listed in the contains section. This note is useful (Delphi even provides a dialog in that case) as a package with implicitely imported units /might/ become incompatible with other packages (e.g. if another package includes that unit uses that package and includes that unit explicitely; of course that is the same as if both package included it explicitely, but with the hint one knows where to look).

pmodules.pas, proc_package:
  * while walking the loaded units also check whether any of them not contained in a package was part of the contained units which are the same as the current module's used units
........
Generate CRC for package files

pcp.pas, tpcpfile:
  + new field do_crc which controls CRC generation
  + override putdata() method to generate CRC when data is written
  * resetfile: enable do_crc by default
........fppu.pas, tppumodule:
  * loadfrompackage: mention if a unit is loaded from a package
........
fpkg.pas, tcontainedunit:
  + new fields offset and size for the PPU data stored inside the PCP
fpcp.pas, tpcppackage:
  * readcontainedunits & addunit: correctly initialize offset and size to 0
........
Store the modified PPU files directly inside the PCP and thus get finally rid of the .ppl.ppu files.

entfile.pas:
  + new entry type ibpputable
pkgutil.pas:
  * adjust RewritePPU to work on a stream as output instead of a filename
fpcp.pas, tpcppackage:
  + new method writepputable() which writes the offsets and sizes of all contained units (not part of CRC!)
  + new method writeppudata() which rewrites all contained PPUs directly into the PCP after the ibend entry (Note: the data is written 16 Byte aligned to ease viewing of the PCP and its contained PPUs in a hex editor)
  + new method readpputable() which reads the offsets and sizes of all contained units
  + new method getmodulestream() which returns a substream for a contained module
  * loadpcp: also call readpputable()
  * writepcp: first write an empty pputable, then finish writing all data that requires the put*/write* methods of the pcpfile, then use writeppudata() to write all PPUs and finally write the correct pputable at the original location
fppu.pas, tppumodule:
  * loadfrompackage: don't read the PPU from a file if it is contained in a package, but using the new tpcppackage.getmodulestream() and tppumodule.openppustream() methods
pmodules.pas, proc_package:
  * don't rewrite the PPUs here
pcp.pas:
  * increase CurrentPCPVersion
........
Fix cycling

........

git-svn-id: trunk@33514 -
2016-04-15 13:39:41 +00:00

123 lines
2.9 KiB
ObjectPascal

{
Copyright (c) 2013-2016 by Free Pascal Development Team
This unit implements basic parts of the package system
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
unit fpkg;
{$i fpcdefs.inc}
interface
uses
cclasses,
globtype,
finput;
type
tcontainedunit=record
module:tmodulebase;
ppufile:tpathstr;
offset:longint;
size:longint;
end;
pcontainedunit=^tcontainedunit;
tpackage=class
public
realpackagename,
packagename : pshortstring;
containedmodules : TFPHashList;
requiredpackages : TFPHashObjectList;
pcpfilename,
ppafilename,
pplfilename : tpathstr;
constructor create(const pn:string);
destructor destroy;override;
end;
tpackageentry=record
package : tpackage;
realpkgname : string;
usedunits : longint;
end;
ppackageentry=^tpackageentry;
implementation
uses
cutils,globals;
{ tpackage }
constructor tpackage.create(const pn: string);
begin
realpackagename:=stringdup(pn);
packagename:=stringdup(upper(pn));
containedmodules:=TFPHashList.Create;
requiredpackages:=TFPHashObjectList.Create(false);
end;
destructor tpackage.destroy;
var
p : pcontainedunit;
i : longint;
begin
if assigned(containedmodules) then
for i:=0 to containedmodules.count-1 do
begin
p:=pcontainedunit(containedmodules[i]);
dispose(p);
end;
containedmodules.free;
requiredpackages.free;
inherited destroy;
end;
procedure packageinit;
begin
packagelist:=TFPHashList.Create;
end;
procedure packagedone;
var
i : longint;
pkgentry : ppackageentry;
begin
if assigned(packagelist) then
begin
for i:=0 to packagelist.count-1 do
begin
pkgentry:=ppackageentry(packagelist[i]);
pkgentry^.package.free;
dispose(pkgentry);
end;
end;
packagelist.Free;
packagelist:=nil;
end;
initialization
register_initdone_proc(@packageinit,@packagedone);
end.